Saying Goodbye to a Professor

[Roosevelt]

I've had a really great Chinese professor the last two semesters, but this will likely be the last class I'll take with her. I'd like to know a good way to say goodbye. I asked my Chinese coworker and she said it would be weird to say “我会想你", which makes sense as it would be weird to say to a professor in English as well. She then suggested I could say "If the opportunity to take another class comes up, I will take it" or "I learned a lot from this semester's class." However, she said these in Chinese but I can only really remember the English translation. Does anyone know how to say these two things in Chinese I remember that last one was something like "在这个学期课我受很多的.“ Or, what would you suggest saying in this situation?